P0302
Cylinder 2 Misfire Detected
Your engine's computer has detected that cylinder number 2 is not firing correctly, meaning it's not contributing power as it should.
The powertrain control module (PCM) has detected a misfire condition in cylinder number 2.
Common causes
- high
Faulty Spark Plug (Cylinder 2)
A worn, fouled, or damaged spark plug in cylinder 2 is a very common cause of a single-cylinder misfire.
Typical part cost: $10-30
- high
Faulty Ignition Coil or Wire (Cylinder 2)
A failing ignition coil or damaged spark plug wire specific to cylinder 2 will prevent proper spark delivery.
Typical part cost: $50-200
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First things to check
- 1Swap spark plug from cylinder 2 to another cylinder and see if the misfire moves.
- 2Swap ignition coil from cylinder 2 to another cylinder and see if the misfire moves.
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Related codes
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Frequently asked questions
What's the first thing I should check for a P0302?
The easiest and most common culprits are the spark plug and ignition coil for cylinder 2. Swapping them with a known good cylinder is a quick way to see if the misfire follows the component.
Can a P0302 code cause my car to stall?
Yes, a severe misfire in cylinder 2 can cause the engine to run very roughly, lose significant power, and potentially stall, especially at idle or low speeds.
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